Icom IC-7300 HF/50 MHz Transceiver – wide band modification. 1. Check the radio to be disconnected from power supply 2. Please, use ESD discharge measures! No kidding, use ESD countermeasures both for your body and for the soldering station! 3. Use a lot of soldering flux! The diodes are very sensitive to high temperature and…
DetailsThe K9AY is terminated loop. It consists of a wire loop of any convenient shape (diamond, delta, etc), hung from a single support and with a ground rod at the bottom. A 9:1 impedance-matching transformer is connected from one end of the loop to the ground and terminating resistor is connected the other end of…
DetailsWeekend VHF QRP FM transceiver is an Open source project that was started by Jure, S52CQ in March 2015 when he started using DRA818 in his transceivers. He has made many variations/modifications since then and now the Weekend project is a nice project for HAM novice operator that within a weekend makes his first…
DetailsMain functions: Six outputs to one input. Frequency range DC-72 MHz Characteristic impedance 50 ohm Power rating DC to 30 MHz 2 kW continue wave 3,5 kW PEP (SWR < 1:1.7) (tested with OM-3500) 50MHz 1 KW High quality PCB thickness 2 mm High quality PTFE SO-239 connectors. (KIT with connectors only) Disconnect output terminated…
DetailsMany hams find that their HF mobiles receive more noise than they do usable signals. Common noise sources include the ignition system and alternator. Spark plug noise is propagated through ungrounded body panels and the exhaust system, which is normally suspended from rubber vibration dampers. The rubberized supports insulate the exhaust from ground, essentially creating…
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